If you are currently seeing to rent a plasma television, or buy one, you might want to read additional to understand what it is that you are shopping for, and why you might find it to be superior to a former set. Over the past three-quarters of a century, most televisions have been built using the same old technology; a cathode ray tube, or Crt. In such a model, a gismo fires a beam of negatively charged particles (electrons) inside a large tube. Those electrons then agitate phosphor atoms positioned along the wide end of the tube, or the screen, causing them to illuminate. The image on the television screen is produced by illuminating separate areas of the phosphor coating at separate intensities with separate colors.
Crts may yield clear colorful images, but their major drawback is that they are just plain big. They take up a lot of space. If you want to make a Crt television screen larger, you need to make the tube even larger so that the firing gismo can reach the whole thing. Therefore, it is approximately impossible to have a large-screen Crt television that leaves adequate space in the room for viewers.
That is why plasma flat panel televisions became so popular. Plasma televisions have large screens, comparable to even the largest Crt models, but at a fraction of the thickness (about six inches or 15 centimeters). Plasma televisions use facts in a video signal to light up thousands of tiny dots (or pixels) with a high-energy beam of electrons.
Most plasma screens have three colors of pixels evenly distributed on the inner surface: red, green and blue. On a plasma screen, the pixels are illuminated to form the image that the viewer sees. The television is able to yield any other color straight through combining those three in separate ways, and by varying the intensities of the illuminating lights.
These new televisions get their name from the main element in their fluorescent lights: plasma. Plasma is a gas made up of free-flowing ions (electrically charged atoms) and electrons (negatively charged particles). When the plasma set is turned on, electrical current runs straight through it, so the electrons are rushing towards the assuredly charged areas of plasma, and protons in the plasma rush towards the negatively charged areas. Constant collision between the two excites the plasma, causing them to publish light photons; the colors that you eventually see on your screen.
Inside a plasma television, xenon and neon gases are contained in assuredly hundreds of thousands of small cells squeezed between long electrodes, which are in turn squeezed between two glass plates. Address electrodes are arranged vertically and make up the back layer, and transparent display electrodes are arranged horizontally along the front. Together they form a basic grid.
The plasma display computer charges the electrodes that intersect particular cells so as to ionize them. This happens thousands upon thousands of times within a particular second. The resulting electric current causes charged particles to flow rapidly and make the gas atoms publish ultraviolet photons. Those photons in turn interact with phosphor material coated on the inside wall of the cell. The resulting reaction causes the phosphors in the plasma display to give off colored lights; the three colors that we described earlier. The variations in the pulses of current flowing straight through the electrodes and cells causes hundreds of separate combinations of the three colors, and is thus able to replicate the whole color spectrum.
What assuredly matters in the end is that manufacturers can use this technology to yield a very wide screen using extremely thin materials. The final stock is manageable and space-friendly. The resulting image on the screen is clear and appealing and looks good just about any way you look at it. When plasma televisions first came out, the cost of purchasing one assuredly was prohibitive to the average person. However, the technology becomes more and more affordable with every model year. And plasma rental is also becoming very competitive.
LG 42LK450 42-Inch 1080p 60 Hz LCD HDTV Overview : If you been hearing about how amazing Blu-ray entertainment is, or how much better your favorite shows would look in HD, you've heard right. The thing is, you need 1080p Full HD to get the most out of both. With the 42LK450, you can.
LG 42LK450 42-Inch 1080p 60 Hz LCD HDTV Feature
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Plasma Tv
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